Tashigang - Samdrup Jongkhar Via Khaling (±180 Kms / ±7 Hrs)
The road winds down to the Samdrup Jongkhar which is the southeastern border town of India. At Kanglung (13 miles from Trashigang, 45 minutes), you may want to stop to visit the Sherubtse College which was the only college in Bhutan in the 70s. The road then climbs through fields of corn, potatoes, it crosses Yongphula pass (2190m/7184 ft.) offering the last glimpse of the Himalayas, and then enters the broad valley of Khaling. Here you will stop to visit the National Institute for the Disabled.
Further, 2 miles down is National Hand-loom Development Project which is one of several royal government initiatives to stimulate weaving as a national art and a source of livelihood for women. Wild silk yarn imported from Assam is dyed with vegetable colors and synthetic dyes. Khaling silk is sought after by Thimphu women for their own weaving. From here, it's a further 3-4 hrs. drive and there are a few small temples and villages but not largely significant.
Upon arrival in the town, check into the hotel and take rest for the day. Samdrup Jongkhar is largely a frontier town and has very little cultural importance.